The announcement follows mounting fears that the two nuclear-armed countries were on the brink of engaging in another full-scale war.
"We agreed that a full and unconditional ceasefire must begin on Monday, May 12, for at least 30 days. We jointly demand this from Russia, and we know we are supported in this by the United States," Zelensky said.
Ukrainian media outlet ZN.UA reported on May 10 that their law enforcement sources confirmed an ongoing probe by the National Anti-Corruption Bureau into suspected embezzlement, money laundering and bribery.
Iran is preparing to send Russia Fath-360 short-range ballistic missile launchers, Reuters reported on May 9, citing Western security and regional officials familiar with the matter.
"Ukraine and all allies are ready for a complete unconditional ceasefire on land, in the air, and at sea for at least 30 days, starting as early as Monday," Ukraine's Foreign Minister Andrii Sybiha wrote.
U.S. President Donald Trump has acknowledged in private that Russia is difficult to negotiate with because they "want the whole thing," referring to Ukraine, the WSJ reported, citing sources familiar with the comments.
The visit marks Merz’s first trip to Ukraine, and the first time all four leaders have travelled there together.
A notice about the airspace closure was published on the U.S. Defense Department's NOTAM (Notice to Airmen) website on May 10, as cited by Ukrainian defense news outlet Militarnyi.
"As in the past, it is now for Russia to show its willingness to achieve peace," the EU's statement reads.
Kremlin spokesperson Dmitry Peskov rejected the idea of a 30-day ceasefire between Russia and Ukraine, claiming in an interview with ABC News on May 10 that it would be "an advantage" for Ukraine.
"Our involvement in the war was justifiable, and this belongs to our sovereign rights," North Korean dictator Kim Jong Un said. "I regard this as part of the sacred mission we must execute for our brothers and comrades-in-arms."
The number includes 1,310 casualties that Russian forces suffered over the past day.
"We have a plan B and a plan C. But our focus is plan A, the essence of which is to get everyone's support" for Ukraine's accession, EU foreign policy chief Kaja Kallas said.
Ukraine, Ireland sign agreement on cooperation, support

Ukraine's President Volodymyr Zelensky and Irish Prime Minister Simon Harris signed a bilateral cooperation agreement during the latter's visit to Kyiv on Sept. 4.
As of today, Kyiv has signed 26 bilateral agreements with foreign partners based on the declaration made by the G7 during a summit in Vilnius in July 2023.
The Agreement on Support for Ukraine and Cooperation between the two countries outlines Dublin's humanitarian aid, support for Ukraine's recovery, EU integration efforts, and holding Russia accountable for war damages, among other items.
As part of the 10-year agreement, Ireland has pledged an additional 128 million euros ($140 million) in non-lethal military support and at least 40 million euros ($44 million) in humanitarian assistance to Ukraine this year.
Ireland said it would supply mine clearance systems and explosive ordnance disposal equipment, support the training of Ukrainian soldiers through an EU mission, and explore other pathways for aid within the Ramstein group, such as the IT coalition.
"I want to express my special gratitude to Ireland for the joint efforts in demining our land – this is truly saving countless lives," Zelensky wrote on X after the agreement was signed.
Harris arrived in Kyiv earlier on Sept. 4, visiting settlements in Kyiv Oblast damaged by Russian forces in 2022, namely Hostomel.
During the visit, Ireland announced a new package of support worth 36 million euros ($40 million) for "Ukraine and its neighbors" to provide "essential humanitarian assistance, support rehabilitation and eventual reconstruction, and contribute to Ukraine's longer-term goals, including peace, stability, and political aspirations."
Since the outbreak of the full-scale war, Dublin's funding to Ukraine has amounted to over 380 million euros ($420 million), the Irish government said.
This included humanitarian, economic, and non-lethal defense support but no lethal aid due to Ireland's long-standing military neutrality policy. The country is one of the few EU members that is not a member of NATO.

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